NHTSA Complaint #11417705 — 2017 MERCEDES-BENZ GLC300

What component or system failed or malfunctioned, and is it available for inspection upon request? Car is at Mercedes dealer for repair. How was your safety or the safety of others put at risk? Yes, car lost acceleration on freeway and put other drivers at risk on the road. Lucky to get off freeway and pull over without any injuries. Has the problem been reproduced or confirmed by a dealer or independent service center? Dealer provided feedback cracked piston, cylinder # 2. Reading on forums, others continue to have the same issue. Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? Inspected by Mercedes bens manufacturer. Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? in retrospect, some slow acceleration delays 1-2 days prior, but not consistent.